Applied Hydraulics #$4\mathrm{.}1\mathrm{.}6.$

The $40-$m$-$long, $4-$in$.$ commercial steel pipe connects reservoirs A and $B$ as shown in Figure P$4\mathrm{.}1\mathrm{.}6.$ Determine the pressure at each point designated in the figure $($points $"1"$ through $"6")$ if the water flow is $10\mathrm{.}1\frac{L}{s}(20C),$ reservoir $A$ is subjected to a pressure of $9\mathrm{.}79$kPa $($gauge$),$ all valves are fully open, and bend losses are negligible.